CompTIA CySA+ (CS0-003) — Question 274

Numerous emails were sent to a company’s customer distribution list. The customers reported that the emails contained a suspicious link. The company’s SOC determined the links were malicious. Which of the following is the best way to decrease these emails?

Answer options

Correct answer: A

Explanation

Implementing DMARC (Domain-based Message Authentication, Reporting & Conformance) helps to protect against fraudulent emails by ensuring that only authorized emails are sent from the domain. DKIM (DomainKeys Identified Mail) and SPF (Sender Policy Framework) also provide email authentication but do not offer the same level of reporting and policy enforcement as DMARC. SMTP (Simple Mail Transfer Protocol) is a protocol for sending emails and does not specifically address email authenticity or security.